where does cellular respiration get glucose

In anaerobic respiration, weak oxidants like sulfate and nitrate serve as oxidants in the place of oxygen. Anaerobic respiration Īnaerobic respiration is done by aerobic organisms when there is not sufficient oxygen in a cell to undergo aerobic respiration as well as by cells called anaerobes that selectively perform anaerobic respiration even in the presence of oxygen. All usable energy is efficiently extracted. Although there is energy stored in the bonds of these molecules, this energy is not easily accessible by the cell. All of the energy stored in the carbon-carbon bonds of glucose is released, leaving CO 2 and H 2O.

The simple nature of the final products also indicates the efficiency of this method of respiration.

CO 2 is formed in Pyruvate decarboxylation, H 2O is formed in oxidative phosphorylation, and both are formed in the citric acid cycle. This strategy results in the waste products H 2O and CO 2 being formed in different amounts at different phases of respiration. Aerobic respiration proceeds in a series of steps, which also increases efficiency - since glucose is broken down gradually and ATP is produced as needed, less energy is wasted as heat.

Aerobic respiration is thus very efficient because oxygen is a strong oxidant. In aerobic respiration, oxygen serves as the recipient of electrons from the electron transport chain. Simplified Theoretical Reaction: C 6H 12O 6 (aq) + 6O 2 (g) â 6CO 2 (g) + 6H 2O (l) + ~ 30ATPĬells undergoing aerobic respiration produce 6 molecules of carbon dioxide, 6 molecules of water, and up to 30 molecules of ATP (adenosine triphosphate), which is directly used to produce energy, from each molecule of glucose in the presence of surplus oxygen. When in the presence of oxygen, cells use aerobic respiration to obtain energy from glucose molecules. One example of cellular respiration creating cellular waste products are aerobic respiration and anaerobic respiration.Įach pathway generates different waste products. Cellular waste products are formed as a by-product of cellular respiration, a series of processes and reactions that generate energy for the cell, in the form of ATP.

Where does cellular respiration get glucose